€ ‡d€ ‡d€ ‡duvm_fault(0xfffffd8077f1a458, 0x4, 0, 1) -> e kernel: page fault trap, code=0 Stopped at igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d TID PID UID PRFLAGS PFLAGS CPU COMMAND igmp_leavegroup(ffff800000d59180,ffff8000006b7000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d59180) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000d2d8b0) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd80740bb010) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd8077f3aae0) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd8077f3aae0,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd8077f3aae0,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd80664941f8,ffff800024b8d600) at soo_close+0x44 fdrop(fffffd80664941f8,ffff800024b8d600) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd80664941f8,ffff800024b8d600) at closef+0x11b sys/kern/kern_descrip.c:1258 fdfree(ffff800024b8d600) at fdfree+0xf3 sys/kern/kern_descrip.c:1190 exit1(ffff800024b8d600,0,0,1) at exit1+0x35d sys/kern/kern_exit.c:197 sys_exit(ffff800024b8d600,ffff80002b31d920,ffff80002b31d970) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002b31d9f0) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bd7888b4a40, count: 1 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xfffffd8077f1a458, 0x4, 0, 1) -> e ddb> trace igmp_leavegroup(ffff800000d59180,ffff8000006b7000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d59180) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000d2d8b0) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd80740bb010) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd8077f3aae0) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd8077f3aae0,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd8077f3aae0,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd80664941f8,ffff800024b8d600) at soo_close+0x44 fdrop(fffffd80664941f8,ffff800024b8d600) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd80664941f8,ffff800024b8d600) at closef+0x11b sys/kern/kern_descrip.c:1258 fdfree(ffff800024b8d600) at fdfree+0xf3 sys/kern/kern_descrip.c:1190 exit1(ffff800024b8d600,0,0,1) at exit1+0x35d sys/kern/kern_exit.c:197 sys_exit(ffff800024b8d600,ffff80002b31d920,ffff80002b31d970) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002b31d9f0) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bd7888b4a40, count: -14 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002b31d5b0 rbx 0x3 rdx 0 rcx 0x1 rax 0 r8 0 r9 0 r10 0x354dda1ec870076e r11 0x6280e3f4e76afbab r12 0 r13 0x3 r14 0xffff800000d59180 r15 0xffff8000006b7000 rip 0xffffffff818680ef igmp_leavegroup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002b31d580 ss 0x10 igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d ddb> show proc PROC (syz-executor.6) pid=192087 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000265d0dd0,0xffff800024b8c5c0 process=0xffff80002b2b43f8 user=0xffff80002b318000, vmspace=0xfffffd8077f1a458 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 16964 79224 61292 0 2 0 syz-executor.3 3147 121271 43677 0 2 0 syz-executor.2 44376 143760 60156 0 2 0 syz-executor.1 44376 190192 60156 0 3 0x4000080 fsleep syz-executor.1 263 156026 12450 0 3 0x80 nanoslp syz-executor.4 263 210475 12450 0 3 0x4000080 lockf syz-executor.4 263 2514 12450 0 3 0x4000080 fsleep syz-executor.4 96327 335395 96120 0 3 0x82 nanoslp syz-executor.7 43677 25874 96120 0 3 0x82 nanoslp syz-executor.2 34458 115669 0 0 3 0x14200 acct acct 80674 51894 96120 0 2 0x2 syz-executor.0 60156 192246 96120 0 3 0x82 nanoslp syz-executor.1 61292 152993 96120 0 2 0x2 syz-executor.3 66764 36081 96120 0 3 0x82 nanoslp syz-executor.6 9160 164803 1 0 3 0x100083 ttyin getty 88453 68905 96120 0 2 0x2 syz-executor.5 65091 521958 0 0 3 0x14280 nfsidl nfsio 6626 350551 0 0 3 0x14280 nfsidl nfsio 80970 390495 0 0 3 0x14280 nfsidl nfsio 15292 708 0 0 3 0x14280 nfsidl nfsio 19319 416324 0 0 3 0x14280 nfsidl nfsio 70520 499325 0 0 3 0x14280 nfsidl nfsio 46000 133717 0 0 3 0x14280 nfsidl nfsio 44089 285030 0 0 3 0x14280 nfsidl nfsio 58910 165033 0 0 3 0x14280 nfsidl nfsio 6708 297707 0 0 3 0x14280 nfsidl nfsio 10476 233119 0 0 3 0x14280 nfsidl nfsio 29441 27217 0 0 3 0x14280 nfsidl nfsio 74588 242870 0 0 3 0x14280 nfsidl nfsio 45233 1878 0 0 3 0x14280 nfsidl nfsio 97343 435967 0 0 3 0x14280 nfsidl nfsio 55737 195415 0 0 3 0x14280 nfsidl nfsio 20840 246326 0 0 3 0x14280 nfsidl nfsio 5301 31069 0 0 3 0x14280 nfsidl nfsio 78695 68600 0 0 3 0x14280 nfsidl nfsio 65052 15440 0 0 3 0x14280 nfsidl nfsio 55153 493817 0 0 3 0x14200 bored sosplice 12450 487212 96120 0 3 0x82 nanoslp syz-executor.4 96120 352280 85615 0 3 0x82 thrsleep syz-fuzzer 96120 18515 85615 0 3 0x4000082 nanoslp syz-fuzzer 96120 324740 85615 0 3 0x4000082 wait syz-fuzzer 96120 436315 85615 0 3 0x4000082 wait syz-fuzzer 96120 312900 85615 0 3 0x4000082 thrsleep syz-fuzzer 96120 11917 85615 0 3 0x4000082 wait syz-fuzzer 96120 56679 85615 0 3 0x4000082 wait syz-fuzzer 96120 271938 85615 0 3 0x4000082 kqread syz-fuzzer 96120 230641 85615 0 3 0x4000082 thrsleep syz-fuzzer 96120 62049 85615 0 3 0x4000082 thrsleep syz-fuzzer 96120 399739 85615 0 3 0x4000082 wait syz-fuzzer 96120 93344 85615 0 3 0x4000082 wait syz-fuzzer 96120 2658 85615 0 3 0x4000082 wait syz-fuzzer 96120 183312 85615 0 3 0x4000082 wait syz-fuzzer 85615 200551 43694 0 3 0x10008a sigsusp ksh 43694 131454 72171 0 3 0x9a kqread sshd 72171 205967 1 0 3 0x88 kqread sshd 32022 337159 46821 73 3 0x1100090 kqread syslogd 46821 1366 1 0 3 0x100082 netio syslogd 19519 259243 1 0 3 0x100080 kqread resolvd 53508 516522 0 0 3 0x14200 bored smr 43973 77916 0 0 2 0x14200 zerothread 20141 228010 0 0 3 0x14200 aiodoned aiodoned 85738 513668 0 0 3 0x14200 syncer update 10811 15344 0 0 3 0x14200 cleaner cleaner 36520 138708 0 0 3 0x14200 reaper reaper 48958 272474 0 0 3 0x14200 pgdaemon pagedaemon 5191 188311 0 0 3 0x14200 bored viomb 92184 297815 0 0 3 0x40014200 acpi0 acpi0 31494 152802 0 0 3 0x14200 bored softnet3 58706 106192 0 0 3 0x14200 bored softnet2 27833 266391 0 0 3 0x14200 bored softnet1 22640 292577 0 0 3 0x14200 bored softnet0 66586 175951 0 0 3 0x14200 bored systqmp 72356 306972 0 0 3 0x14200 bored systq 30969 382186 0 0 3 0x40014200 bored softclock 50009 430893 0 0 3 0x40014200 idle0 1 163772 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10200 6419K 7533K 78643K 13286 0 pcb 15 16K 18K 78643K 3103 0 rtable 216 16K 17K 78643K 1541 0 ifaddr 87 26K 27K 78643K 1512 0 sysctl 2 0K 0K 78643K 2 0 counters 29 17K 17K 78643K 445 0 ioctlops 0 0K 2K 78643K 380 0 iov 0 0K 28K 78643K 651 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1404 88K 88K 78643K 5054 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 117 0 VM map 2 1K 1K 78643K 2 0 sem 10 1K 1K 78643K 17 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 89K 78643K 9379 0 sigio 0 0K 0K 78643K 43 0 proc 54 43K 83K 78643K 1029 0 subproc 104 6K 6K 78643K 286 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 1045 0 in_multi 87 5K 7K 78643K 1570 0 ether_multi 1 0K 0K 78643K 602 0 mrt 1 0K 0K 78643K 40 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 229 1023K 1023K 78643K 229 0 exec 0 0K 1K 78643K 1401 0 pfkey data 0 0K 0K 78643K 3 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 335 88K 103K 78643K 87332 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 1 0K 0K 78643K 1292 0 NDP 15 0K 2K 78643K 410 0 temp 141 5858K 14054K 78643K 68067 0 kqueue 7 12K 22K 78643K 626 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 467 0 465 2 1 1 2 0 8 0 rtentry 112 402 0 311 4 0 4 4 0 8 0 unpcb 144 6133 0 6126 73 72 1 10 0 8 0 syncache 296 38 0 38 10 10 0 1 0 8 0 tcpqe 32 103 0 103 9 9 0 1 0 8 0 tcpcb 776 3910 0 3902 98 90 8 8 0 8 6 arp 88 47 0 31 1 0 1 1 0 8 0 ipq 40 5 0 5 4 4 0 1 0 8 0 ipqe 40 23 0 23 4 4 0 1 0 8 0 inpcb 336 13718 0 13705 130 123 7 15 0 8 5 nd6 104 121 0 99 1 0 1 1 0 8 0 pkpcb 40 7 0 7 2 2 0 1 0 8 0 kcovpl 48 22 0 14 1 0 1 1 0 8 0 mppekey 1024 3 0 3 1 1 0 1 0 8 0 ppxss 1160 101 0 100 14 13 1 1 0 8 0 pppxif 1360 67 0 66 10 9 1 1 0 8 0 pfstscr 40 75 0 71 2 1 1 1 0 8 0 pfanchor 1288 788 3 276 45 2 43 43 0 8 0 pfstitem 24 10 0 2 1 0 1 1 0 8 0 pfstkey 128 150 0 142 2 1 1 1 0 8 0 pfstate 352 75 0 71 2 1 1 1 0 8 0 rttmr 136 7 0 7 2 2 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1856 0 1464 45 16 29 29 0 8 1 art_table 32 1857 0 1464 4 0 4 4 0 8 0 art_node 16 397 0 318 1 0 1 1 0 8 0 sysvmsgpl 40 44 0 4 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 14421 0 12976 91 0 91 91 0 8 0 ffsino 240 14421 0 12976 86 0 86 86 0 8 0 nchpl 144 28495 0 26847 63 0 63 63 0 8 0 rtmask 32 3 0 3 1 1 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 95871 0 95871 7 6 1 3 0 8 1 kstatmem 264 718 0 688 3 0 3 3 0 8 0 scsiplug 72 11 0 11 3 3 0 1 0 8 0 scxspl 216 73317 0 73317 26 25 1 8 0 8 1 plimitpl 152 668 0 654 1 0 1 1 0 8 0 sigapl 424 9672 0 9610 8 0 8 8 0 8 0 futexpl 64 135496 0 135494 4 3 1 1 0 8 0 knotepl 120 141177 0 140994 43 37 6 14 0 8 0 kqueuepl 184 1116 0 1110 11 7 4 4 0 8 3 pipepl 288 1003 0 974 15 12 3 7 0 8 0 fdescpl 432 9634 0 9610 4 0 4 4 0 8 0 filepl 120 68049 0 67812 84 73 11 16 0 8 2 lockfpl 104 15029 0 15025 7 6 1 2 0 8 0 lockfspl 48 1837 0 1834 1 0 1 1 0 8 0 sessionpl 144 39 0 24 1 0 1 1 0 8 0 pgrppl 48 90 0 75 1 0 1 1 0 8 0 ucredpl 104 17820 0 17813 1 0 1 1 0 8 0 zombiepl 144 9612 0 9610 3 2 1 1 0 8 0 processpl 1008 9672 0 9610 11 2 9 9 0 8 0 procpl 696 23138 0 23060 13 4 9 9 0 8 0 sosppl 168 24 0 24 7 7 0 1 0 8 0 sockpl 456 20338 0 20316 349 338 11 33 0 8 8 mcl64k 65536 324 0 324 22 21 1 1 0 8 1 mcl16k 16384 217 0 217 17 17 0 1 0 8 0 mcl12k 12288 1333 0 1333 7 6 1 1 0 8 1 mcl9k 9216 109 0 109 24 24 0 1 0 8 0 mcl8k 8192 849 0 849 9 8 1 1 0 8 1 mcl4k 4096 906 0 906 12 11 1 1 0 8 1 mcl2k2 2112 51 0 51 20 19 1 1 0 8 1 mcl2k 2048 91118 0 91075 48 40 8 30 0 8 2 mtagpl 96 8 0 8 3 3 0 1 0 8 0 mbufpl 256 239499 0 239392 246 235 11 58 0 8 0 bufpl 288 16503 0 10115 457 0 457 457 0 8 0 anonpl 24 993594 0 979074 206 98 108 121 0 188 0 amapchunkpl 152 278790 0 277929 93 56 37 47 0 158 0 amappl16 200 20615 0 20169 95 70 25 38 0 8 0 amappl15 192 18 0 18 1 1 0 1 0 8 0 amappl14 184 192 0 182 2 1 1 2 0 8 0 amappl13 176 21 0 21 1 1 0 1 0 8 0 amappl12 168 10474 0 10450 2 0 2 2 0 8 0 amappl11 160 57 0 51 1 0 1 1 0 8 0 amappl10 152 60 0 46 1 0 1 1 0 8 0 amappl9 144 229 0 229 21 21 0 2 0 8 0 amappl8 136 321 0 235 3 0 3 3 0 8 0 amappl7 128 86 0 70 1 0 1 1 0 8 0 amappl6 120 417 0 399 2 1 1 2 0 8 0 amappl5 112 347 0 342 1 0 1 1 0 8 0 amappl4 104 953 0 919 2 0 2 2 0 8 0 amappl3 96 56014 0 55943 3 0 3 3 0 8 0 amappl2 88 10604 0 10556 4 2 2 3 0 8 0 amappl1 80 42838 0 42434 22 11 11 22 0 8 0 amappl 88 86590 0 86372 6 0 6 6 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 9634 0 9610 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9634 0 9610 1 0 1 1 0 8 0 vmmpekpl 168 66330 0 66272 3 0 3 3 0 8 0 vmmpepl 168 566598 0 564565 254 149 105 123 0 357 5 vmsppl 368 9633 0 9610 4 1 3 4 0 8 0 rwobjpl 24 139667 0 132286 50 4 46 47 0 8 0 pdppl 4096 19274 0 19220 630 572 58 76 0 8 4 pvpl 32 2621566 0 2601749 571 397 174 360 0 265 0 pmappl 216 9633 0 9610 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1837 0 1074 24 0 24 24 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace igmp_leavegroup(ffff800000d59180,ffff8000006b7000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d59180) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000d2d8b0) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd80740bb010) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd8077f3aae0) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd8077f3aae0,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd8077f3aae0,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd80664941f8,ffff800024b8d600) at soo_close+0x44 fdrop(fffffd80664941f8,ffff800024b8d600) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd80664941f8,ffff800024b8d600) at closef+0x11b sys/kern/kern_descrip.c:1258 fdfree(ffff800024b8d600) at fdfree+0xf3 sys/kern/kern_descrip.c:1190 exit1(ffff800024b8d600,0,0,1) at exit1+0x35d sys/kern/kern_exit.c:197 sys_exit(ffff800024b8d600,ffff80002b31d920,ffff80002b31d970) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002b31d9f0) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bd7888b4a40, count: -14 ddb> machine ddbcpu 1 No such command ddb> trace igmp_leavegroup(ffff800000d59180,ffff8000006b7000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d59180) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000d2d8b0) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd80740bb010) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd8077f3aae0) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd8077f3aae0,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd8077f3aae0,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd80664941f8,ffff800024b8d600) at soo_close+0x44 fdrop(fffffd80664941f8,ffff800024b8d600) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd80664941f8,ffff800024b8d600) at closef+0x11b sys/kern/kern_descrip.c:1258 fdfree(ffff800024b8d600) at fdfree+0xf3 sys/kern/kern_descrip.c:1190 exit1(ffff800024b8d600,0,0,1) at exit1+0x35d sys/kern/kern_exit.c:197 sys_exit(ffff800024b8d600,ffff80002b31d920,ffff80002b31d970) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002b31d9f0) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bd7888b4a40, count: -14